Several key figures in the doping downfall of Lance Armstrong will take part in a summit that aims to put pressure on cycling's world governing body.

US Anti-Doping Agency chief executive Travis Tygart will speak via telephone this Sunday at the Change Cycling Now conference in London.

Organisers aim to put pressure on the UCI in the wake of the Armstrong scandal, the biggest crisis in cycling's tainted history.

"The group ... is holding the UCI to account for (alleged) mis-handling the sport's global image in the wake of the Lance Armstrong doping scandal and will discuss proposals that offer an alternative approach to re-invigorate a sport that is suffering from a globally damaged reputation," organisers said in a statement.

Tygart oversaw the USADA investigation that led to Armstrong's lifetime ban from the sport.

Armstrong continues to deny doping, but he has also lost his record seven Tour de France titles.

Australian anti-doping scientist Michael Ashenden will also attend the conference.

Australian businessman Jaimie Fuller is co-ordinating the group.

Fuller made headlines earlier this month when he announced his company SKINS would sue the UCI for $2 million.

He accuses the UCI of harming the company's image by failing to crack down sufficiently on doping and run a clean sport.